Make sure stdlib.h is always included before dmalloc.h to avoid problems
parsing problems.
diff --git a/include/busybox.h b/include/busybox.h
index 28ea253..ba4edca 100644
--- a/include/busybox.h
+++ b/include/busybox.h
@@ -27,6 +27,7 @@
 #include "config.h"
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <stdarg.h>
 #include <sys/stat.h>
 #include <sys/types.h>